This analog meter circuit was found in the September 1989 issue of Radio Electronics magazine. The source must be dual, and the table gives the resistors for the various scales.
We found this circuit in an old General Electric documentation. In fact, PUTs are not common...
This circuit for analog video signals was found in a March 1988 Radio Electronics. The Maxim...
The circuit shown in the figure can be used to detect the operation of infrared sources whose...